He who excuses himself accuses himself

We suspect that the person who makes too many excuses because he is probably covering up his ill actions. It is better to admit a thing frankly than to make excuse, for the excuses are such obvious evasions that they irritate instead of convincing.

See also:

• Qui s’excuse, s’accuse
• He who denies all confesses all
• Excusatio non petita accusatio manifesta